Fuse box



Aug. 18, 1931. J. sANDlN 1,819,204

FUSE BOX File Jan. g, 1927 2 sheets-sheet 1 WITNESSES: NVENTOR 05; l `fefkorr? e, 50007?) J. SANDIN Aug. 18, 1931.

FUSE BOX Filed Jan. 14, 1927 2 Sheets-Sheet 2 INVENTOR .fe/Ome Gnd/I7.

ATTORNEY TNWESES: n KQM Patented' Aug. v1a, 1931 l UNirEf STA Tas PATENT" oFFlcE :naci/In' sANnrN, or wILKINs moWNsrIIP, ALLEGHENY ooUNTY, PENNSYLVANIA, As-

' sIeNoP. fro Wris'rrNGI-rousn unicorn-Ic a MANUFACTURING COMPANY, A CORPORA-` rrIoN` oPPnNNsYLVANIA FUSE BOX Application` filed January 14, 1927. Serial No.A 161,057. 1

My invention relates to fuse mechanisms and particularly to enclosed expulsion fuses. One object or myinvention is to provide an adjustableterminal for a fuse tube clip disposed within a housing. that may be con' nected to an electrical circuit from either side ot' said housing. f

Another object of myinvention is to provide a fuse tube having a shoulder 'for engaging a supporting insulating member in such manner that the reactive shock, inycident to the disruption of the rfuse will be absorbed'inthe lower part of the insulated supporting member by subjecting it to a direct vcompi'essional strain, thereby elimif nating the possibilities ot fracture that heretofore existed when the insulating supporting member was subjected. to stresses transterredk by cantilever strains. l A further object et my invention is to provide a fuse khousing from which the fuse tube projects to reliminate the formation of f an arcandarc gases within the housing.

g It Vis, frequently desirable that electrical conductors from either side of a housing may f y I Y tends from the insulating bushings 10 and be attached to the upper or lower fuse clip terminalsot a fuse box..v Heretofore the changing of a porcelain*insulator from an l upper to a lower hole in the side of they housing or vire-versawas common practice in n'ialing such changes in the connections.

l eliminate the eXtra hole in each side of the housing and mount the porcelain insulators an enclosed adjustable terminal rather than the insulators. j f

My invention lalso provides a shoulder elementat the lower end of the fuse for abutting against the lower end of an insulating supporting member whereby the shock incident to the disruption of the fuse is absorbed by the lower part of the insulating supporting member by subjecting it to stresses r indirect compression. y

My invention further provides a hole in the bottom of the rfuse housing to or beyond the bottom otwhfich the expulsion end of the fuse tube rprojects when the door of the housing is closed, thereby liberating Athe arc or direct shearingy directl o 3 )osite to each other b chanefinf` t Si b and arc gases eXteriorly of the fuse housing and eliminating the use of arcv barriers between the fuse terminals.

These and other objects are attained'by theconstruction herein described and illustrated in the accompanying drawings, in y which n Fig.Y l is a side View, partly in section and partly inelevation otmy enclosed expulsion fuse mechanism; and y Fig. 2 is a broken front view of the appa ratus shown in Fig. l, with the cover and fuse cartridge removed.

Referring kto the drawings, a housing 1` comprises a door 2, a rear panel 3, side walls land 5 of wood, a metal` cover 6 and a perforatedV bottom 7. iThe sidewalls 4 and 5 have two opposite7 diagonalholes S and 9 that support insulating bushings 10 and 11. The rear panel 3supports an insulating 1nember'12, by bolts 13, thathas supported thereon iuseftube clips 14 and 15.by bolts 16. An yadjustable terminalfmember 18 is attached to the lower fuse clip 14; by screws 19 for clamping it in position on either sideof the stop 2O.A An electrical conductor 22 eX- engages the kadjustable terminal 18'. An-

other electrical conductor 23 `extends from vthe door 2 by the disengagement of thefhooks trom the pins 26. The fuse tube 29 has'ay bushing 32 that abuts against the Vlower face oli' the, insulating member 27 andprojects tokr or beyond a perforation 33'in the bottom 7 i of the housing 2.

On loosening the nuts 19, the terminal 18 may be moved tothe rightof the stop 20, to enga-ge the conductor 227 or to the left of the stop 2O to engage the conductor 23, thereby eliminating the necessity ot changing the insulators in the lield to meet the line conditions.

Upon closing the door 2 o the housing l, the expulsion or lower end of the fuse 29 projects to or beyond the bottom o'i tlie housing; whereby the arc and arc gases are ejected -from the inse tube from Without the fuse housing l.

The shoulder member 32 of the fuse tube 29, abutting against the lower face of insulating member 2T, transfers the shock incident to the rupturing-` ot the fuse 29 to the loiver portion ot the'insulating member 27 and snbjects it to in compression that limit the possibility of breaking they member and thus prevents the longitudinal movement oi' the Jfuse.

iiiccordingly, my invention embodies a fuse tube supporting member, part ot which is subject to compressional strains v-:hen absorbing thev shoes; incident to 'fuse rupture, thereby limiting the danger ot breaking the supporting member that etten occurs when it is subjected to strains in cantilever or direct shear. My invention also simplilies the ivork ot maintaining and installing the fuse housings in the field as the porcelain insulators tor the conducting members are permanentl f' located in the side Walls of the housing thereby eliminating the necessity for rearranging them to meet changing conditions, as has been the practice heretofore. lt turther simplifies the details of construction ot the housing by the omission of a. barrier from between the terminal menibers of the 'fuse because the expulsion end of the Jfuse tube projects to or beyond the bottom or" the housing. lt is to be understood that such changes in the form, arrangement and connection et the component parts ot my invention may be made as shall tall 'ithin the scope of the appended claims.

I claim as my invention: l. A fuse structure comprising a housing, a pair ot bushings associated therewith in angular relation to each other, a fuse tube, an insulating member vfithin the housing having means for engaging the terminals ot the fuse tube, one ot the engaging means having a terminal member adapted to be adjusted to any one ot a plurality of positions. ln a fuse structure, the combination with a. Jruse, of a housing therefor, an insulating member Within the housing having conducting members mounted thereon for engaging the terminals of the fuse tube, one of the conducting members having an adjustable terminal adapted to be moved to engage a conductor extending trom either side et' the housing and clamping means on the end ot the terminal for engaging the conductor. 3. ln combination with an expulsion fuse, a housing having a pair of oppositely distherefor having an insulating men'iber thereon, a shoulder member on the expulsion fuse tube 'n proximity to its expulsion end and ing the insulating' member whereby the se sliocl; incident to the disruption ot )soi-bed by the lower part et the g member.

5. culmination with an enclosed eX- ails ice, ot a housing, a hinged door 5 ating vi insulating member theren. a shoulder member on the expulsion fuse t i' ii zts i L 'Ffsion e"vl and ip member, whereby ion fuse will subject the lower part o 'he insulating member to cempressioual strains that absorb the shock tl'iereirom and retain the fuse tube in its orig' .il position.

ne combination, in a fuse housing havii g a siro'le pair ot oppositely disposed bushinf for the reception of electrical conductors, oi a swinging terminal therefor, a stop member for positioning the terminal, and clamping means tor holding the terminal in fixed position.

7. rlie combination, in fuse housing having le pair ol ippositely uis; )sed bushi r the recept-ion of electrical conductors,

mean.. tor supporting a fuse with its axis nori'o a plane through said bushii a ter- .ai movable to einA gc a con-'lr ir from r" and ciampi y .ueans conductor on the end or the terminal. ihe combinationvsith a fuse housing, eta pair of bushings for the reception ot e: lrical conductors disposed in a plane per- Jey dicular to the fuse anis, means ior supporting the said bushings in angular relation to the said housing, a terminal movable into engagement nith the conductor from either i said bushing., and clamiliing means lor the terminal in fined position. ln testimony whereof, I have hereunto subscribed my name this (5th day of January, 1Q' h Jill-10M@- SANDD?. 

